What does mean the descent of Kukulkan?

Answers from the books of Samael Aun Weor

Quetzalcoatl is in itself, the Sun and the Serpent, they’re one. In the Mysteries of Zarathustra, AHURAMAZDA, the Christ (or the Egyptian OSIRIS) was always associated to the Sun. Similarly, the Sun, the fire, the Feathered Serpent are associated to the King Star. And it is not like our ancestors from Anahuac or the ancestors of this blessed land where we are now, where idolaters for worshipping the Sun, it is that they understood that this Sun that lights us is just the symbol of an SPIRITUAL, TRANSCENDENTAL SUN.